ebrary, Inc, & Ritrovato, P. (2005). Towards the learning grid: Advances in human learning services. IOS Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रebrary, Inc, और Pierluigi Ritrovato. Towards the Learning Grid: Advances in Human Learning Services. Washington, DC: IOS Press, 2005.
एमएलए (9वां संस्करण) प्रशस्ति पत्रebrary, Inc, और Pierluigi Ritrovato. Towards the Learning Grid: Advances in Human Learning Services. IOS Press, 2005.
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